package com.itheima.reggie.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.itheima.reggie.common.R;
import com.itheima.reggie.dto.DishDto;
import com.itheima.reggie.entity.Dish;
import com.itheima.reggie.entity.DishFlavor;
import com.itheima.reggie.mapper.DishMapper;
import com.itheima.reggie.service.DishFlavorService;
import com.itheima.reggie.service.DishService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.web.bind.annotation.GetMapping;

import java.util.List;
import java.util.stream.Collectors;

@Service
public class DishServiceImpl extends ServiceImpl<DishMapper, Dish> implements DishService {

    @Autowired
    private DishFlavorService dishFlavorService;

    @Override
    /**
     * @description:新增菜品，同时保存口味数据
     * @author: yanhongwei
     * @date: 2023/5/24 9:31
     * @param: [dishDto]
     * @return: void
     **/
    @Transactional
    //多张表操作开启事务
    public void saveWithFlavor(DishDto dishDto) {
        //保存菜品的基本信息到菜品表dish
        this.save(dishDto);

        Long dishId=dishDto.getId();//菜品id

        //菜品口味
        List<DishFlavor> flavors = dishDto.getFlavors();
        //遍历追加菜品id
        flavors=flavors.stream().map((item)->{
            item.setDishId(dishId);
            return item;
        }).collect(Collectors.toList());

        //保存菜品口味数据到菜品口味表dish_flavor
        dishFlavorService.saveBatch(flavors);
    }

    @Override
    /**
     * @description:根据id查询菜品信息
     * @author: yanhongwei
     * @date: 2023/5/24 17:09
     * @param: [id]
     * @return: com.itheima.reggie.dto.DishDto
     **/
    public DishDto getByIdWithFlavor(Long id) {
        //查询菜品基本信息,从dish表查询
        Dish dish=this.getById(id);

        DishDto dishDto=new DishDto();
        BeanUtils.copyProperties(dish,dishDto);

        //查询当前菜品对应的口味信息，从dish_flavor表查询
        LambdaQueryWrapper<DishFlavor> queryWrapper=new LambdaQueryWrapper<>();
        queryWrapper.eq(DishFlavor::getDishId,dish.getId());

        List<DishFlavor> list = dishFlavorService.list(queryWrapper);

        dishDto.setFlavors(list);

        return dishDto;
    }

    @Override
    /**
     * @description:修改菜品，同时修改口味数据
     * @author: yanhongwei
     * @date: 2023/5/24 9:31
     * @param: [dishDto]
     * @return: void
     **/
    @Transactional
    //多张表操作开启事务
    public void updateWithFlavor(DishDto dishDto) {
        //保存菜品的基本信息到菜品表dish
        this.updateById(dishDto);

        //清理当前对应的口味数据---dish_flavor表的delete操作
        LambdaQueryWrapper<DishFlavor> queryWrapper=new LambdaQueryWrapper<>();
        queryWrapper.eq(DishFlavor::getDishId,dishDto.getId());

        dishFlavorService.remove(queryWrapper);

        //添加当前添加过来的菜品口味数据---dish_flavor表的insert操作
        List<DishFlavor> flavors = dishDto.getFlavors();

        //遍历追加菜品id
        flavors=flavors.stream().map((item)->{
            item.setDishId(dishDto.getId());
            return item;
        }).collect(Collectors.toList());

        //保存菜品口味数据到菜品口味表dish_flavor
        dishFlavorService.saveBatch(flavors);
    }



}
